ReNpDrm constantly refreshes the system’s activation files so that it achieves its purpose of granting unrestricted access to PSN.This plugin will bring along the following:

Activation for unactivated consoles (or consoles that Sony rudely deactivated..) so that you can play your legally purchased digital games again!
Full access to PSN will be restored without the possibility of losing your activation files.
You will be able to purchase and download games from PSN again so you needn’t pirate games if you want to run them off your memory card! This is particularly great if you wish to benefit from the somewhat regular PSN sales!
Applications such as LiveTweet can also be downloaded so you can get access to the slim suite of smartphone-esque applications again!

Download both restore.suprx and renpdrm.skprx;
Copy these 2 files to ur0:tai/ (using FTP or USB or any way);
Open ux0:tai/config.txt if this file exists, or else ur0:tai/config.txt;
Under *ALL line, write : ur0:tai/restore.suprx
Under *KERNEL line, write : ur0:tai/renpdrm.skprx
Save the file
Reboot PSVita;
You can now use the PSStore and activate your PSVita from the Settings app under PlayStation Network.
Remarks
If you have nonpdrm.skprx inside config.txt, try removing it then reboot PSVita.

Changelog

v3
fixed rif folder creation
fixed 0KB act.dat checking
found why some users had 0 KB act.dat
-> 2 things to do if you have some problems :
- if activation fails : go to http://account.sonyentertainment.com/ and deactivate all devices
- if you have another problem, it should be fixed in new ver

Name	Version	Released	Hits	DL Link	QR
ReNpDrm	v3 beta	12/27/17	652	Download	QR
ReNpDrm	v1.0 beta	12/26/17	608	Download	QR